Ok I rebuild my holley 670 street avenger last night. Reinstalled it today and turned on my fuel pump.

Fuel is coming from the spout on the main-body. Just started pouring out. Only on the primary side though.

Is there a check ball or something that I didn't install right? I didn't notice anything inside it or anything but something was definetly installed wrong.

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"Spout" on the main body?

Sounds like you're talking about the fuel bowl vent.

The fuel isn't under pressure in the carb. Once it gets past the float needle valve, it is at atmospheric pressure or less.

Either your float isn't properly adjusted, or the float is jammed by something, or there's something in the needle valve holding it open.

 

Okay, you posted on the carb forum, too. Would be nice to know that before responding here.

We'll let that forum take the ball. Perhaps someone will come to the answer for you.